Aftermarket Mercury 75HP, 90HP, 115HP, 125HP OptiMax Service Kit (1B227000+) | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement 75HP-125HP OptiMax Service Kit - Kit / Reference: MERC-OPTIMAX-75-125

New aftermarket scheduled-service kit for Mercury three-cylinder 75HP, 90HP, 115HP and 125HP OptiMax direct-injection outboards.

⚙️ Key Features

• Complete major scheduled-maintenance kit for the listed Mercury engine family

• Matched cooling, ignition, fuel, lubrication and sealing components

• Individual service parts identified by OEM or verified cross-reference number

• Designed to simplify annual or hour-based scheduled maintenance

• Engine model and serial number must be confirmed before installation

🧰 Kit / Assembly Contents

• 3 × Spark plugs - Mercury P/N 892567Q / NGK IZFR5J

• 1 × Fuel filter - Mercury P/N 35-884380T

• 2 × Gearcase drain-plug seals - Mercury P/N 12-191833

• 1 × Complete water-pump repair kit - Mercury P/N 8M0100526

• 1 × Thermostat - Mercury P/N 833072003

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• Custom aftermarket service kit assembled from the listed Mercury service components

OEM / Related Numbers:

• 892567Q

• NGK IZFR5J

• 35-884380T

• 12-191833

• 8M0100526

• 833072003

Aftermarket / Verified Equivalents:

• Sawley's Select Marine Parts OptiMax service kit

🚤 Compatibility

Commonly used on:

• Mercury outboard or sterndrive scheduled-maintenance applications

Typically suits:

• Engine / Drive models:

• 75HP OptiMax

• 90HP OptiMax

• 115HP OptiMax

• 125HP OptiMax three-cylinder direct-injection models

• HP Range: 75HP - 125HP

• Year Range: Serial 1B227000 and above

• Model / Serial Identification: Confirm three-cylinder OptiMax configuration; larger V6 OptiMax engines use different plug quantities and cooling components.

🔌 Function

This scheduled-maintenance kit groups the cooling, ignition, fuel, lubrication and corrosion-control components required for the listed engine family. Replacing the matched consumables together helps restore reliable starting, correct cooling-water flow, clean fuel and oil circulation, and leak-free drain and thermostat joints.

Common signs that service is due:

• The annual, 100-hour or manufacturer-specified service interval is due

• The engine's previous service history is unknown

• Cooling-water flow is weak or the engine runs hotter than normal

• Spark plugs are fouled, filters are restricted or starting quality has deteriorated

• Drain seals, pump components or sacrificial anodes show corrosion, wear or leakage

📦 Condition

• New aftermarket replacement service kit

• Brand new

• Supplied in original or equivalent packaging